URL monitoring: Keep a constant eye
on website performance and uptime
Monitor the response time and reachability of URLs
Monitor entire websites or individual elements
Be notified at once by the customizable PRTG alarm
URL monitoring with PRTG
Why URLs should always be reachable
Performance is a must
For most companies, the website is an indispensable part of their daily business. Not only must the website always be available, but it should also be optimized to function at as high a level as possible. Downtime or long load times can be extremely costly.
Company website: A direct
(or indirect) source of revenue
Even without an online store to generate sales directly, your website serves as an indirect source of revenue by providing customers with information about your company and the ways to access your services.
Consequences of a poorly
functioning website
If the URL of your online store is unavailable for several hours, this can result in an immediate and palpable loss in sales. When a web page takes too long to load, many users will simply give up and surf to another site. This, too, can have a negative impact on your company’s revenue. Example: Amazon found their sales would drop by 1% for every 100-millisecond increase in the load times of its pages.
URL monitoring: Keep a constant eye on your website
PRTG constantly checks all your URLs
With PRTG URL monitoring, you can continually check the reachability of your web pages. It lets you immediately see if a page is up and its processes running. You can even add and monitor several different pages – or an entire list of URLs – with a few quick clicks.
Built-in alarm and reports
PRTG automatically verifies that entire pages or individual elements (such as text or images) are available. At the same time, the PRTG URL Monitoring Tool measures response times and displays this information in long-term graphs. Should your website go offline or a response time exceed its limit, you’ll immediately be alerted by SMS, email, or push notification.
Sensors for URL monitoring
How PRTG defines sensors
In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.
HTTP Sensor
The HTTP sensor monitors a web server with the HTTP protocol. HTTP is the easiest way to check whether a website (or a certain website element) is reachable.
HTTP Transaction Sensor
The HTTP Transaction Sensor performs a series of HTTP requests which are sent to the server when a user visits a certain web page. In this way, it simulates the various actions carried out by a user upon visiting a website. Among other things, this sensor lets you simulate an online purchase or newsletter subscription. As a result, you can use this sensor to make sure critical processes (such as your online store’s shopping cart) are up and running.HTTP Full Web Page Sensor
The HTTP Full Web Page Sensor uses a web browser instance such as Chromium or Internet Explorer. This sensor checks the load times of the entire website, including all its various elements (e.g. images). It does not, however, verify that all the site’s content was loaded.
All PRTG URL monitoring sensors support HTTP and HTTPS.
Why PRTG is the URL monitoring tool for you
All in one
There could be a number of reasons why your URLs are unreachable. PRTG not only lets you keep an eye on the uptime and performance of your pages, but also the web and network components that ensure your site stays functional: databases, servers, CDNs, and applications. With PRTG, you'll spend a lot less time troubleshooting.
Prompt alerts
One of the key features of PRTG is its customizable notification system. It’s simple: you set a custom threshold value for every parameter you wish to monitor. If this value is exceeded, then PRTG will immediately send you an alert by email, push notification, or SMS.
Automated reports
PRTG automatically logs the reachability of your URLs and the performance of your website. For example, with PRTG, you can have monthly PDF monitoring summaries sent to your manager automatically. These summaries will definitely come in handy when you’re asked to justify a request to update the IT infrastructure.
Free mobile apps
By the way, PRTG is also available as an app for your smartphone or tablet. This app is compatible with both iOS and Android devices and grants you worldwide access to your network monitoring environment. Its easy-to-read dashboard provides you with a close-up look at your network.
The goal: 99.999 percent!
When it comes to the availability of your website, servers, and databases,
only one figure matters: 99.999. These “five nines” are indicative of the
high availability of your network.
PRTG helps you target this ambitious goal.
Trusted by 500,000 users and recognized
by industry analysts as a leader
“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”
“Software is absolutely perfect, Support is superior. Meets all needs and requirements, this is a must have solution if you are needing any form of monitoring.”
“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”
Keep a constant eye on your network – even while on the go
PRTG is set up in a matter of minutes and can be used on a wide variety of mobile devices.
PRTG is a vital tool for getting your IT into tip-top shape!
The costs for a one-year PRTG license pay for themselves in an average of only a few weeks.
License costs vary according to the size of your network.
PRTG makes
your network more reliable
PRTG saves
network management costs
PRTG saves time
spent on network management
“Easy to implement and configure with good technical support.”
R. v. S., ICT Manager at Heinen & Hopman Eng BV

Other topics of interest
Website monitoring
How do I monitor my website health and performance? Web server status and availability, reachability via ping, visitor numbers...PRTG measures all the key data regarding your website. Custom PRTG reports present your information in an easy-to-read manner.
PRTG makes sure the DHCP service has been started and an address assigned. If the address pool is scarce or the response time too long, you’ll be notified at once.
PRTG monitors Internet usage, bandwidth, and hardware such as routers and switches. With PRTG, you can rest assured that your coworkers and customers have access to all the information they need.
We asked: would you recommend PRTG?
Over 95% of our customers say yes!
Paessler AG conducted trials in over 600 IT departments worldwide to tune its network monitoring software closer to the needs of sysadmins.
The result of the survey: over 95% of the participants would recommend PRTG – or already have.
PRTG: The multi-tool for sysadmins
Adapt PRTG individually and dynamically to your needs and rely on a strong API:- HTTP API: Access monitoring data and manipulate monitoring objects via HTTP requests
- Custom sensors: Create your own PRTG sensors for customized monitoring
- Custom notifications: Create your own notifications and send action triggers to external systems
- REST Custom sensor: Monitor almost everything that provides data in XML or JSON format
Still not convinced?
More than 500,000 sysadmins love PRTG
Paessler PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.
Monitor your entire IT infrastructure
Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.
Try Paessler PRTG for free
Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your trial.
Still not convinced?
PRTG |
Network Monitoring Software - Version 23.3.88.1421 (October 2nd, 2023) |
Hosting |
Download for Windows and cloud-based version PRTG Hosted Monitor available |
Languages |
English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese |
Pricing |
Up to 100 sensors for free (Price List) |
Unified Monitoring |
Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more |
Supported Vendors & Applications |
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Combining the broad monitoring feature set of PRTG with IP Fabric’s automated network assurance creates a new level of network visibility and reliability.